Ram upgrade 2009 mac mini

Hey,

I just attempted to install 16 GB of crucial RAM into my late 2009 mac mini as I'm having some major beach ball issues after updating to Mavericks. I popped these in the machine:

http://amzn.com/B008LTBJFW

When I started it up, the light flashed and it was honking at me. When I put the old RAM in it worked fine. How much RAM can I put into this thing?

Thanks. (Here is an EtreCheck:)

EtreCheck version: 1.9.12 (48)

Report generated July 27, 2014 at 8:42:06 AM PDT

Hardware Information:

Mac mini (Late 2009) (Verified)

Mac mini - model: Macmini3,1

1 2.53 GHz Intel Core 2 Duo CPU: 2 cores

4 GB RAM

Video Information:

NVIDIA GeForce 9400 - VRAM: 256 MB

TH-42P**7 1280 x 720 @ 60 Hz

System Software:

OS X 10.9.3 (13D65) - Uptime: 4 days 13:29:8

Disk Information:

Hitachi HTS543232L9SA02 disk0 : (320.07 GB)

EFI (disk0s1) <not mounted>: 209.7 MB

Macintosh HD (disk0s2) / [Startup]: 319.21 GB (179.61 GB free)

Recovery HD (disk0s3) <not mounted>: 650 MB

OPTIARC DVD RW AD-5670S

USB Information:

Western Digital My Book 1234 3 TB

EFI (disk1s1) <not mounted>: 209.7 MB

Morpheus (disk1s2) /Volumes/Morpheus: 3 TB (1.08 TB free)

Apple Computer, Inc. IR Receiver

Apple Inc. BRCM2046 Hub

Apple Inc. Bluetooth USB Host Controller

FireWire Information:

OEM OEM ATA Device 00 800mbit - 800mbit max

EFI (disk2s1) <not mounted>: 209.7 MB

Raid (disk2s2) /Volumes/Raid: 8 TB (4.15 TB free)

Gatekeeper:

Anywhere

Kernel Extensions:

[loaded] com.Cycling74.driver.Soundflower (1.6.6 - SDK 10.6) Support

[loaded] com.iospirit.driver.rbiokithelper (1.8.0) Support

[loaded] com.logmein.driver.LogMeInSoundDriver (1.0.3 - SDK 10.5) Support

Problem System Launch Daemons:

[failed] com.apple.wdhelper.plist

Launch Daemons:

[loaded] com.adobe.fpsaud.plist Support

[running] com.cleverfiles.cfbackd.plist Support

[running] com.crashplan.engine.plist Support

[loaded] com.google.keystone.daemon.plist Support

[not loaded] com.logmein.logmeinblanker.plist Support

[running] com.logmein.logmeinserver.plist Support

[loaded] com.logmein.raupdate.plist Support

[running] com.teamviewer.teamviewer_service.plist Support

Launch Agents:

[loaded] com.google.keystone.agent.plist Support

[failed] com.logmein.LMILaunchAgentFixer.plist Support

[running] com.logmein.logmeingui.plist Support

[running] com.logmein.logmeinguiagent.plist Support

[not loaded] com.logmein.logmeinguiagentatlogin.plist Support

[running] com.teamviewer.teamviewer.plist Support

[running] com.teamviewer.teamviewer_desktop.plist Support

User Launch Agents:

[failed] com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plist

[running] com.plexapp.helper.plist Support

User Login Items:

iTouch-Server

SABnzbd+

Dropbox

CrashPlan menu bar

Plex Media Server

sb

Google+ Auto Backup

Internet Plug-ins:

o1dbrowserplugin: Version: 5.4.2.18903 Support

nplastpass: Version: 2.0.11 Support

LogMeInSafari64: Version: 1.0.497 Support

Default Browser: Version: 537 - SDK 10.9

Silverlight: Version: 5.1.10516.0 - SDK 10.6 Support

FlashPlayer-10.6: Version: 14.0.0.145 - SDK 10.6 Support

LogMeIn: Version: 1.0.497 Support

Flash Player: Version: 14.0.0.145 - SDK 10.6 Support

QuickTime Plugin: Version: 7.7.3

LogMeInSafari32: Version: 1.0.497 Support

googletalkbrowserplugin: Version: 5.4.2.18903 Support

SharePointBrowserPlugin: Version: 14.0.0 Support

iPhotoPhotocast: Version: 7.0 - SDK 10.8

Safari Extensions:

Open in Internet Explorer: Version: 1.0

Audio Plug-ins:

BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9

AirPlay: Version: 2.0 - SDK 10.9

AppleAVBAudio: Version: 203.2 - SDK 10.9

iSightAudio: Version: 7.7.3 - SDK 10.9

iTunes Plug-ins:

Quartz Composer Visualizer: Version: 1.4 - SDK 10.9

User Internet Plug-ins:

Picasa: Version: 1.0 Support

3rd Party Preference Panes:

Candelair Support

Flash Player Support

MacFUSE Support

teleport Support

Time Machine:

Skip System Files: NO

Mobile backups: OFF

Auto backup: NO - Auto backup turned off

Volumes being backed up:

Macintosh HD: Disk size: 297.29 GB Disk used: 130.02 GB

Destinations:

Raid [Local] (Last used)

Total size: 0 B

Total number of backups: (null)

Size of backup disk: Too small

Backup size 0 B < (Disk used 130.02 GB X 3)

Time Machine details may not be accurate.

All volumes being backed up may not be listed.

Top Processes by CPU:

56% firefox

30% Plex Media Server

11% ScreensharingAgent

7% SABnzbd

4% WindowServer

Top Processes by Memory:

474 MB firefox

254 MB CrashPlanService

98 MB Finder

98 MB mds_stores

41 MB ScreensharingAgent

Virtual Memory Information:

1.23 GB Free RAM

1.04 GB Active RAM

495 MB Inactive RAM

716 MB Wired RAM

9.95 GB Page-ins

2.38 GB Page-outs